Electronic and Thermal Transport Properties of Complex Structured Cu-Bi-Se Thermoelectric Compound with Low Lattice Thermal Conductivity
Figure 2
(a) Crystal structure of Cu1.7Bi4.7Se8 with interstitial Cu and substitutional Bi sites. (b) Seebeck coefficient as a function of electrical conductivity (σ) for Cu-Bi-Se system. Blue and red dots indicate and systems, respectively. Black dot is a base Cu1.7Bi4.7Se8 compound. The inset is Pisarenko plot at 300 K, representing the Seebeck coefficient (S) as a function of carrier concentration (). The dashed line corresponds to the theoretically expected curve for Cu1.7Bi4.7Se8 with effective mass of .
